Thanks for your comments guys. All well below expectations though, as horsetips.com was purchased for £8k and comparetheodds.com for £2k, so I'd be looking for a mark up on that at least!
Johnname - not too sure what you know about horse racing, but the best tips aren't leaked just before the race - these are actually the worst as they usually come from people who bet on numerous races just before they start. The best tips are planned for weeks with running horses in unfavourable conditions, but knowing that it is suited to a race planned ahead for a few weeks, then 2/3 days before the race when looking at the opposition confirming the tip. On the day of the race, these type of tips can be smashed from the likes of 25/1 into 2/1 and canter in, but they are quite rare (unless you have more than a handful of contacts).
My initial idea for horsetips.com was to create a community blog reviewing service/systems etc on an affiliate basis and actually reporting each service/systems results so people know which are genuinely good and which aren't. The idea for comparetheodds.com is straightfoward - an odds comparrison service with affilation to each sporstbook.
I've simply not had the time to go into any of these ideas though due to other commitments, but will happily sell if the price is right.
Cheers.